190-00266-01 GPS 15H & 15L Technical Specifications Rev. DPage 134.1.4 Additional Sensor Configuration Information (PGRMC1)The $PGRMC1 sentence provides additional information used to configure the GPS sensor operation.Configuration parameters are stored in non-volatile memory and retained between power cycles. The GPSsensor echoes this sentence upon its receipt if no errors are detected. If an error is detected, the echoedPGRMC1 sentence will contain the current default values. Current default values can also be obtained bysending $PGRMC1E to the GPS sensor.$PGRMC1,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh<1> NMEA 0183 output time 1-900 (sec)<2> Binary Phase Output Data, 1 = Off, 2 = On<3> Automatic Position Averaging when Stopped, 1 = Off, 2 = On<4> DGPS beacon frequency – 0.0, 283.5 – 325.0 kHz in 0.5 kHz steps<5> DGPS beacon bit rate – 0, 25, 50, 100, or 200 bps<6> DGPS beacon scanning, 1 = Off, 2 = On<7> NMEA 0183 version 2.30 mode indicator, 1 = Off, 2 = On<8> DGPS mode, A = Automatic, W = WAAS Only, R = RTCM Only, N = None (DGPSdisabled)<9> Power Save Mode, P = Power Save mode, N = NormalAt power up or external reset, a stored beacon frequency other than 0.0 causes the GPS sensor to tune thebeacon receiver. Configuration changes take effect immediately, with the exception of Binary Phase OutputData, which takes effect on the next power cycle or a reset event. A reset can be commanded by sendingthe sentence “$PGRMI,,,,,,,R” (refer to section 4.1.2).If the GPS sensor is in the Binary data mode, it is necessary to send the following eight-byte data stream tothe COM 1 input to temporarily change the data format to NMEA 0183. Then send a PGRMC1 sentencethat turns off the Binary Phase Output Data format:10 0A 02 26 00 CE 10 03 (Hexadecimal)4.1.5 Output Sentence Enable/Disable (PGRMO)The $PGRMO sentence provides the ability to enable and disable specific output sentences. The followingsentences are enabled at the factory: GPGGA, GPGSA, GPGSV, GPRMC, PGRMB, PGRME, PGRMM,PGRMT, and PSLIB.$PGRMO,<1>,<2>*hh<1> Target sentence description (e.g., PGRMT, GPGSV, etc.)<2> Target sentence mode, where:0 = disable specified sentence1 = enable specified sentence2 = disable all output sentences (except PSLIB)3 = enable all output sentences (except GPALM)4 = restore factory default output sentencesThe following notes apply to the PGRMO input sentence:1. If the target sentence mode is ‘2’ (disable all), ‘3’ (enable all), or ‘4’ (restore defaults), the targetsentence description is not checked for validity. In this case, an empty field is allowed (e.g.,$PGRMO,,3), or the mode field may contain from 1 to 5 characters.2. If the target sentence mode is ‘0’ (disable) or ‘1’ (enable), the target sentence description field must bean identifier for one of the sentences that can be output by the GPS sensor.3. If either the target sentence mode field or the target sentence description field is not valid, the PGRMOsentence will have no effect.4. $PGRMO,GPALM,1 causes the GPS sensor to transmit all stored almanac information. All otherNMEA 0183 sentence transmission is suspended temporarily.5. $PGRMO,,G causes the COM 1 port to change to Garmin Data Transfer format for the duration of thepower cycle. The Garmin mode is required for GPS 15H & 15L product software updates.
